update turn config to prevent internal access

https://www.rtcsec.com/2020/04/01-slack-webrtc-turn-compromise/

src/server.js

@@ -301,6 +301,7 @@ function initializeExpressSync() {
 
     // upgrade handler
     httpServer.on('upgrade', function (req, socket, head) {
+console.log('THIS IS IN AN UPGADE');
         // create a node response object for express
         var res = new http.ServerResponse({});
         res.assignSocket(socket);